Unit tests are easier to write.

[rdnelson]

Unit tests should be relatively easy to write now.

1. Add a test: libra/test/tests/Test*.cpp
2. Add the required libra objects into the USER_OBJ list in libra/test/Makefile
3. The make file should automatically build and link against anything that you've specified.

Notes:

• Unit tests won't run unless Libra builds completely